EP 0643881 B1 19981216 - ACTIVE PLUS SELECTIVE HEADSET
Title (en)
ACTIVE PLUS SELECTIVE HEADSET
Title (de)
AKTIVER KOPFHÖRER MIT ERHÖHTER SELEKTIVITÄT
Title (fr)
CASQUE D'ECOUTE ACTIF ET SELECTIF
Publication
Application
Priority
US 9204567 W 19920605
Abstract (en)
[origin: WO9326084A1] An active plus selective headset system for provision of active attenuation of broadband noise as well as speech filtering comprising a headset (11) with reference microphones (14), residual microphones (13) and speakers (12) on each of a pair of open backed muffs (21, 22) and a controller (20).
IPC 1-7
IPC 8 full level
A61F 11/14 (2006.01); G10K 11/16 (2006.01); G10K 11/178 (2006.01); H03B 29/00 (2006.01)
CPC (source: EP US)
A61F 11/145 (2022.01 - EP); G10K 11/17823 (2017.12 - EP US); G10K 11/17837 (2017.12 - EP US); G10K 11/17854 (2017.12 - EP US); G10K 11/17881 (2017.12 - EP US); G10K 2210/108 (2013.01 - EP); G10K 2210/1081 (2013.01 - EP); G10K 2210/3028 (2013.01 - EP); G10K 2210/3045 (2013.01 - EP); G10K 2210/3222 (2013.01 - EP)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU MC NL SE
DOCDB simple family (publication)
WO 9326084 A1 19931223; CA 2136950 A1 19931223; CA 2136950 C 19990309; DE 69227924 D1 19990128; DE 69227924 T2 19990729; DK 0643881 T3 19990823; EP 0643881 A1 19950322; EP 0643881 A4 19950412; EP 0643881 B1 19981216
DOCDB simple family (application)
US 9204567 W 19920605; CA 2136950 A 19920605; DE 69227924 T 19920605; DK 92913700 T 19920605; EP 92913700 A 19920605